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A204628 Number of (n+1)X7 0..2 arrays with every 2X2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..2 introduced in row major order 1
393216, 425257068, 459972403614, 497525810748759, 538145459458960020, 582081449451902347866, 629604521519860258105194, 681007535879068229405338152, 736607263887839663637635211744 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A204630

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..0..1..0..2..1..2..2....0..0..0..0..0..0..0....0..1..0..1..1..1..1

..1..1..0..1..1..0..0....1..1..1..0..1..2..2....1..1..0..0..1..2..1

..2..0..0..2..0..0..1....1..0..1..1..1..0..2....0..2..1..0..2..2..1

..1..2..0..1..2..2..0....0..0..0..0..1..1..0....0..2..2..2..1..2..0

CROSSREFS

Sequence in context: A157741 A157623 A145228 * A171439 A210162 A320209

Adjacent sequences:  A204625 A204626 A204627 * A204629 A204630 A204631

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 2012

STATUS

approved

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Last modified October 15 13:06 EDT 2019. Contains 328030 sequences. (Running on oeis4.)